<form action="/api" method="POST" enctype="multipart/form-data">
上传文件：<input type="file" name="myfile" /><br />
<input type="hidden" value="NnG1757a91ef2629a5cf14b093fbNnG1" name="ak" />
<input type="hidden" value="20*20" name="thumb" />
<input type="hidden" value="ZBCloud_Upload_File" name="api" />
<input type="submit" value="测试上传" />
</form>